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823篇 您的检索式:作者名="Scheeres"
    题名 作者 年代 出处 被引量
1飞行器近小行星轨道动力学的特点及研究意义显示文摘该文在介绍小行星及对其探测意义的基础上,以NEAR、Muses-C(Hayabusa)小行星探测器为例,重点分析了飞行器与小行星距离较近时(near asteroid)的动力学环境及其对环绕小行星飞行的飞行器设计的影响.并以旋转的二阶二次重力场和小行星Castalia为例,进一步阐述近小行星轨道动力学的一些特点和结论。此外,还给出了小行星探测的一些建议和设想.胡维多 SCHEERES 向开恒 2009天文学进展2009,,2:11
2CAD and CAE Integration Through Scientific Visualization Techniques for Illumination Design显示文摘Engineers tend to use different software to perform tasks such as geometry modeling, database management, numerical analysis, and visualization. This may cause decrease of productivity and loss of information during the conversion process between different data file formats. This paper presents a computer aided design (CAD) and computer aided engineering (CAE) system integration using scientific visualization tools and techniques. It deals with the development of a 3D CAD add-in for lighting analysis which uses the CAD model as 3D interface for creating a lighting scheme, processing, and visualizing 2D or 3D illuminance fields. Visualization features as color and contour mapping were developed using the visualization toolkit (VTK) toolkit. The application integrates all functionalities of the 3D CAD with tools for light sources database management, pre-processing, processing, and post-processing of illuminance fields in a single environment. This approach increases productivity and eliminates the need for different software.Tiago Martinuzzi Buriol Sergio Scheer 2008Tsinghua Science and Technology2008,13,S1:10
3Tumor-stroma ratio as prognostic factor for survival in rectal adenocarcinoma: A retrospective cohort study显示文摘AIM To evaluate the prognostic value of the tumor-stroma ratio(TSR) in rectal cancer.METHODS TSR was determined on hematoxylin and eosin stained histological sections of 154 patients treated for rectal adenocarcinoma without prior neoadjuvant treatment in the period 1996-2006 by two observers to assessreproducibility. Patients were categorized into three categories: TSR-high [carcinoma percentage(CP) ≥ 70%], TSR-intermediate(CP 40%, 50% and 60%) and TSR-low(CP ≤ 30%). The relation between categorized TSR and survival was analyzed using Cox proportional hazards model.RESULTS Thirty-six(23.4%) patients were scored as TSR-low, 70(45.4%) as TSR-intermediate and 48(31.2%) as TSRhigh. TSR had a good interobserver agreement(κ = 0.724, concordance 82.5%). Overall survival(OS) and disease free survival(DFS) were significantly better for patients with a high TSR(P = 0.01 and P = 0.02, respectively). A similar association existed for disease specific survival(P = 0.06). In multivariate analysis, patients without lymph node metastasis and an intermediate TSR had a higher risk of dying from rectal cancer(HR = 5.27, 95%CI: 1.54-18.10), compared to lymph node metastasis negative patients with a high TSR. This group also had a worse DFS(HR = 6.41, 95%CI: 1.84-22.28). An identical association was seen for OS. These relations were not seen in lymph node metastasis positive patients. CONCLUSION The TSR has potential as a prognostic factor for survival in surgically treated rectal cancer patients, especially in lymph node negative cases.René Scheer Alexi Baidoshvili Shorena Zoidze Marloes AG Elferink Annefleur EM Berkel Joost M Klaase Paul J van Diest 2017World Journal of Gastrointestinal Oncology2017,9,12:3
4Periodic Orbits in Rotating Second Degree and Order Gravity Fields显示文摘Periodic orbits in an arbitrary 2nd degree and order uniformly rotating gravity field are studied. We investigate the four equilibrium points in this gravity field. We see that close relation exists between the stability of these equilibria and the existence and stability of their nearby periodic orbits. We check the periodic orbits with non-zero periods. In our searching procedure for these periodic orbits, we remove the two unity eigenvalues from the state transition matrix to find a robust, non-singular linear map to solve for the periodic orbits. The algorithm converges well, especially for stable periodic orbits. Using the searching procedure, which is relatively automatic, we find five basic families of periodic orbits in the rotating second degree and order gravity field for planar motion, and discuss their existence and stability at different central body rotation rates.Wei-Duo Hu Daniel J. Scheeres 2008Chinese Journal of Astronomy and Astrophysics2008,8,1:3
5Mapping Chaparral in the Santa Monica Mountains Using Multiple Endmember Spectral Mixture Models显示文摘D.A. Roberts M. Gardner R. Church S. Ustin G. Scheer R.O. Green 1998Remote Sensing of Environment1998,,3:2
6Evaluation of the dynamics environment of an asteroid: applications to 433 eros显示文摘Scheeres D J Williams B G Miler J K 2000Journal of Guidance Control and Dynamics2000,23,3:2
7Cost-Efficiency and Outcomes in the Treatment of Perforated Peptic Ulcer Disease: Laparoscopic Versus Open Approach显示文摘G. Paul Wright Alan T. Davis Tracy J. Koehler David E. Scheeres 2014Surgery2014,,:2
8藻红蓝蛋白α-亚基脱辅基蛋白与藻蓝胆素的重组显示文摘利用在大肠杆菌中表达的藻红蓝蛋白 α-亚基脱辅基蛋白与藻蓝胆素 PCB重组 ,吸收光谱、荧光光谱和高效可逆光化学性质分析表明 ,藻红蓝蛋白 α-亚基脱辅基蛋白与藻蓝胆素直接重组 ,生成的胆素蛋白中辅基色素仍为藻蓝胆素 ;而藻红蓝蛋白 α-亚基脱辅基蛋白与藻蓝胆素在藻红蓝蛋白 α-亚基重组酶 (pec E和 pec F基因的表达产物 )催化下重组 ,生成的胆素蛋白中辅基色素转变为藻紫胆素 ,并具有高效可逆光化学特性。王鲁 周明 邓明刚 赵开弘 STORF Max SCHEER Hugo 2002武汉植物学研究2002,20,1:2
9Endogenous Circadian Rhythm in Vasovagal Response to Head-Up Tilt显示文摘Kun Hu Frank A.J.L. Scheer Michael Laker Carolina Smales Steven A. Shea 2011Circulation2011,,9:2
10Low dose spiral CT: applicability to pediatric chest imaging 显示文摘Rogolla P Stover B Scheer I 1999Pediatr Radiol1999,29,:1
11Stress ulcer prophylaxis in critically ill patients:a randomized controlled trial显示文摘Kantorova I Svoboda P Scheer P 2004Hepatngastroenterology2004,51,57:1
12:The effects of trust and interdependence on relationship commitment: A transatlantic study显示文摘Geyskens I Steen K B Scheer L K 1996International Journal of Research in Marketing1996,13,4:1
13Daily nighttime melatonin reduces blood pressure in male patients with essential hypertension显示文摘Scheer FA Van Montfrans GA Van Someren E J 2004J Hypertens2004,43,2:1
14Risk fac- tors for morbidity and death in non-cystic fibrosis bron- chiectasis: a retrospective cross-section analysis of CT diagnosed bronchiectatic patients 显示文摘Goeminne PC Scheers H Decraene A 2012Respir Res2012,13,:1
15Control of hovering spacecraft using altimetry 显示文摘SAWAI S SCHEERES D J BROSCHART S B 2002Journal of Guidance Control and Dynamics2002,25,4:1
16The effects of supplier fairness on vulnerable resellers显示文摘KUMAR N SCHEER L K STEENKAMP J E M 1995Journal of Marketing Research1995,32,2:1
17TBP as a candidate gene for mental retardation in patients with subtelomeric 6q deletions 显示文摘Rooms L Reyniers E Scheers S 2006Eur J Hum Genet JT European Journal of Human Genetics : EJHG2006,14,10:1
18Effects of particle shape on particle identification and scatter predictions 显示文摘Scheer C A Ivakhnenko V Stover J C 2001Intl Soc Optical Eng2001,4449,:1
19Effect of sodium hyaluronate administered at the end of penetrating keratoplasty on reepithelialization of the graft显示文摘Scheer S Borderic V 1999J Fr Ophthalmol1999,22,8:1
20Modeling and optimization of short Yb3+ sensitized Er^3+-doped fiber amplifiers显示文摘NILSSON J SCHEER P JASKORZYNSKA B 1994IEEE Photonics Technology Leters1994,6,3:1
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